Assessment of Nutritional Status of Guava Seedlings using Preliminary DRIS Norms and Sufficiency Ranges

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dc.contributor.authorSouza, H. A.
dc.contributor.authorRozane, D. E. [UNESP]
dc.contributor.authorAmorim, D. A.
dc.contributor.authorDias, M. J. T. [UNESP]
dc.contributor.authorModesto, V. C. [UNESP]
dc.contributor.authorNatale, W. [UNESP]
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionAgr Res Co Minas Gerais
dc.date.accessioned2018-11-26T16:16:38Z
dc.date.available2018-11-26T16:16:38Z
dc.date.issued2015-08-24
dc.description.abstractThe objective of this work was to propose preliminary Diagnosis and Recommendation Integrated System (DRIS) norms and derive critical levels and nutrient sufficiency ranges in the leaves of guava plants in commercial nursery conditions. Sixty-eight leaf samples were evaluated from fertilization trials with seedlings. In the low-yield subpopulation (84% of the population), the limiting nutrients by deficiency in descending order were nitrogen (N)> copper (Cu)>phosphorus (P) = potassium (K)> manganese (Mn)> iron (Fe) = zinc (Zn)> sulfur (S)> boron (B) = magnesium (Mg)> calcium (Ca), and the limiting ones by excess in descending order were B > Ca > Fe > Mn > S > Mg > Cu > P > Zn > N = K. The ranges of the appropriate DRIS indices were 24 to 28, 2.4 to 3.1, 21 to 29, 6 to 8, 1.9 to 2.9 and 1.9 to 2.3 (g kg(-1)) for the macronutrients N, P, K, Ca, Mg and S, respectively, and 35 to 48, 4 to 15, 68 to 93, 31 to 60 and 180 to 245 (mg kg(-1)) for the micronutrients B, Cu, Fe, Mn and Zn, respectively. The dry matter production of guava seedlings was associated with the nutritional status.en
dc.description.affiliationBrazilian Agr Res Corp CNPC, BR-62010970 Sobral, Brazil
dc.description.affiliationState Univ Sao Paulo, Registro, Brazil
dc.description.affiliationAgr Res Co Minas Gerais, Uberaba, Brazil
dc.description.affiliationState Univ Sao Paulo, Jaboticabal, Brazil
dc.description.affiliationUnespState Univ Sao Paulo, Registro, Brazil
dc.description.affiliationUnespState Univ Sao Paulo, Jaboticabal, Brazil
dc.format.extent1611-1618
dc.identifierhttp://dx.doi.org/10.1080/01904167.2015.1017050
dc.identifier.citationJournal Of Plant Nutrition. Philadelphia: Taylor & Francis Inc, v. 38, n. 10, p. 1611-1618, 2015.
dc.identifier.doi10.1080/01904167.2015.1017050
dc.identifier.fileWOS000360518800003.pdf
dc.identifier.issn0190-4167
dc.identifier.urihttp://hdl.handle.net/11449/160767
dc.identifier.wosWOS:000360518800003
dc.language.isoeng
dc.publisherTaylor & Francis Inc
dc.relation.ispartofJournal Of Plant Nutrition
dc.relation.ispartofsjr0,332
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectPsidium guajava
dc.subjectleaf analysis
dc.subjectnursery
dc.titleAssessment of Nutritional Status of Guava Seedlings using Preliminary DRIS Norms and Sufficiency Rangesen
dc.typeArtigo
dcterms.licensehttp://journalauthors.tandf.co.uk/permissions/reusingOwnWork.asp
dcterms.rightsHolderTaylor & Francis Inc
unesp.departmentEngenharia Agronômica - FCAVRpt

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